Question

Write the coefficients of x 2 in each of the following:

(i) 2 + x 2 + x

(ii) 2 – x 2 + x 3

(iii) $\frac{π }{ 2}$ x2 + x

(iv) √2 x -1

Answer 1

(i) 2 + x2 + x

In the above expression, the coefficient of x2 is 1.

(ii) 2 - x2 + x3

In the above expression, the coefficient of x2 is -1.

(iii) $\frac{ π}{2}$x2 + x

In the above expression, the coefficient of x2 is π/2.

(iv) √2x - 1, or 0.x2+√2x - 1

In the above expression, the coefficient of x2 is 0.